Socorro County, NM Roof Snow Load - 15 psf
How much snow is too much for a roof in Socorro County, NM?
15 psf: that's what ASCE 7-22 requires a typical heated home's roof in Socorro County to carry. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 15 psf - higher than the 10.5 psf the ground-load formula alone would give, and the code says use the larger one.
Picture it, not just weigh it: 33 in. if it's fresh powder, 12 in. once it settles, or a mere 3 in. if it's ice. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Socorro County in numbers
- Design roof snow load15 psf
- Ground snow load, ASCE 7 map15 psf
- National rank#1,499 of 2,758
- New Mexico rank#2 of 27
- Population15,967
- Annual snowfall, NOAA normal4.7 in.
- FIPS35053
How Socorro County compares
15 psf ranks #1,499 of 2,758 US counties with a mapped snow load (top 54%) - and #2 of 27 in New Mexico. 6.9 psf is New Mexico's typical county figure - Socorro County beats it by 8.1 psf.
Population 15,967 (FIPS 35053), roughly 33.9917°N 106.9391°W. The 15 psf ground snow load ASCE 7-22 maps here becomes 15 psf once the code's own design factors are applied.
Typical snowfall in Socorro County, NM
NOAA's 30-year normal for Socorro County: 4.7 in. of snow a year, from the BERNARDO, NM US station. That station is far enough away (30.3 mi) that local snowfall - especially at a different elevation or near a lake - can run noticeably higher or lower than this figure. (fresh vs. packed vs. ice explains why.)
What this Socorro County figure assumes
This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.
Socorro County's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. (How this figure is calculated.)